[ 源代码： 9wm ]
软件包：9wm（1.4.1-1）
X11 window manager inspired by Plan 9's rio
It provides a very simple and clean user interface. It is click-to-type. It uses the X11 font system (which, unfortunately, means no Unicode support).
9wm does not provide virtual desktops, customization, key bindings, EWMH support, or compositing. It does not allocate any colors, which will be great news if you are stuck in 1993.
It is a great place to start if you are interested in writing a window manager from scratch: many folks have done exactly this.